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The ALT alternating relays are used to alternate between two loads. The ALT is commonly used in duplex pumping applications to balance the runtime of both pumps. The ALT-S is used in single high-level float applications. When the float switch opens, the alternating relay changes state, forcing the other pump to run the next time the float closes. All ALT relays have a built-in debounce feature that prevents the relay from changing state if the switch or float contact bounces momentarily. The ALT-X has an internal cross-connected relay and is used in dual high-level float applications. These floats are commonly referred to as lead and lag floats. The pumps alternate as in the ALT-S version but the crossconnected relay configuration allows both pumps to run simultaneously when both the lead and lag floats are closed. These relays are also available with a built-in switch (SW option) that is used to manually force one of the pumps to run every time the float switch is closed. This is helpful when a pump has been removed for repair or for test purposes. In the case of the ALT-X-SW, the switch essentially forces one pump to be the lead pump, while still allowing the second to run when both floats are closed. Must use the OT08PC socket for UL Rating!

Littelfuse

ALT-115-S-SW Symcom Alternating Relay/ 95-125V/ 8-

MFR: Littelfuse

MFR #: ALT-115-S-SW

UPC: 079458991314

Item #: 1382862

Available to Order

Availability

Location	Available Qty

No Image Available

Littelfuse

Solid State Timer

MFR: Littelfuse

MFR #: KSDB314SP

UPC: 079458995565

Item #: 150727

In Stock - Check Availability

$243.03 each

Availability

Location	Available Qty

No Image Available

Littelfuse

Ground Fault Ground-Check Monitor

MFR: Littelfuse

MFR #: SE-105

UPC: 079458188233

Item #: 454484

Available to Order

$5843.90 each

Availability

Location	Available Qty

No Image Available

Littelfuse

Gf/Gc Term Assembly 5.6V 50W Tc

MFR: Littelfuse

MFR #: SE-TA6A

UPC: 079458989540

Item #: 531235

Available to Order

$2046.95 each

Availability

Location	Available Qty

Used On Systems Up To 1 kV.

Littelfuse

ER-600VC ER-600VC Series Res Sensing 20K 1000V L-L

MFR: Littelfuse

MFR #: ER-600VC

UPC: 079458977950

Item #: 450698

Available to Order

$1765.08 each

Availability

Location	Available Qty

Contact Expansion, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 8 N/O, 1 N/C, UB = 110 -120 VAC, 90mm

PILZ

Contact Expansion, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 8 N/O, 1 N/C, UB = 110 -120 VAC, 90mm

MFR: PILZ

MFR #: 774143

Item #: 180000

Available to Order

$705.00 each

Availability

Location	Available Qty

PNOZsigma Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, Manual/Automatic Start, 3 N/O, 1 N/C, 1 SC, UB 24 V DC, 22.5 mm, Plug-in Screw Terminals, Monitoring of E-STOP, Safety Gates, Light Guard

PILZ

PNOZsigma Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, Manual/Automatic Start, 3 N/O, 1 N/C, 1 SC, UB 24 V DC, 22.5 mm, Plug-in Screw Terminals, Monitoring of E-STOP, Safety Gates, Light Guard

MFR: PILZ

MFR #: 750104

Item #: 519846

Available to Order

$510.00 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 3 N/O, 1 N/C, 1 SC, Automatic/Monitored Start, UB 24 V AC/DC, 45 mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates

PILZ

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 3 N/O, 1 N/C, 1 SC, Automatic/Monitored Start, UB 24 V AC/DC, 45 mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates

MFR: PILZ

MFR #: 774310

Item #: 180711

In Stock - Check Availability

$600.00 each

Availability

Location	Available Qty

PSSu, Base Module for Electronic Modules, Periphery, C-rail, 1-Row, 6 Connection Levels, 12 Terminals, Spring-Loaded Connection

PILZ

PSSu, Base Module for Electronic Modules, Periphery, C-rail, 1-Row, 6 Connection Levels, 12 Terminals, Spring-Loaded Connection

MFR: PILZ

MFR #: 312623

Item #: 1532729

Available to Order

$70.00 each

Availability

Location	Available Qty

PNOZsigma Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, Manual/Automatic Start, 3 N/O, 1 N/C, 1 SC, UB 24 VDC, 22.5 mm, Plug-in Spring-Loaded Terminals, Monitoring of E-STOP, Safety Gates, Lightguard

PILZ

PNOZsigma Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, Manual/Automatic Start, 3 N/O, 1 N/C, 1 SC, UB 24 VDC, 22.5 mm, Plug-in Spring-Loaded Terminals, Monitoring of E-STOP, Safety Gates, Lightguard

MFR: PILZ

MFR #: 751104

Item #: 503861

Available to Order

$510.00 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without detection of Shorts Across Contacts, 3 N/O, 1 N/C,1 SC, Automatic/Monitored Start, UB = 24 V AC/DC, 45mm, Plug-in Screw Terminals, Monitoring of E-STOP, Safety Gates Sidewards Compatibility with PNOZ X3

PILZ

Safety Relay, 1/2-Channel Wiring with/without detection of Shorts Across Contacts, 3 N/O, 1 N/C,1 SC, Automatic/Monitored Start, UB = 24 V AC/DC, 45mm, Plug-in Screw Terminals, Monitoring of E-STOP, Safety Gates Sidewards Compatibility with PNOZ X3

MFR: PILZ

MFR #: 787314

Item #: 1587134

Available to Order

$625.50 each

Availability

Location	Available Qty

PNOZsigma Safety Relay, 1-Channel Wiring, Without Detection of Shorts Across Contacts, Manual/Automatic Start, 3 N/O, 1 N/C, 1 SC, UB 24 VDC, 17.5mm, Plug-in Screw Terminals, Monitoring of E-STOP, Safety Gates

PILZ

PNOZsigma Safety Relay, 1-Channel Wiring, Without Detection of Shorts Across Contacts, Manual/Automatic Start, 3 N/O, 1 N/C, 1 SC, UB 24 VDC, 17.5mm, Plug-in Screw Terminals, Monitoring of E-STOP, Safety Gates

MFR: PILZ

MFR #: 750102

Item #: 1638205

Available to Order

$379.50 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without detection of Shorts Across Contacts, 2 N/O, 2 N/Ot-d, UB = 24 VDC, 45mm, Screw Terminals Integrated, E-STOP Monitoring, Safety Gates, with 2 Delay-on De-Energization Contacts, Delay Time Adjustable

PILZ

Safety Relay, 1/2-Channel Wiring with/without detection of Shorts Across Contacts, 2 N/O, 2 N/Ot-d, UB = 24 VDC, 45mm, Screw Terminals Integrated, E-STOP Monitoring, Safety Gates, with 2 Delay-on De-Energization Contacts, Delay Time Adjustable

MFR: PILZ

MFR #: 774502

Item #: 1552481

Available to Order

$895.50 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 7 N/O, 2 N/C, 2 SC, Automatic/Manual/Monitored Start and Automatic Start with Start-up Test, UB 24 V AC/ DC, 90 mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates

PILZ

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 7 N/O, 2 N/C, 2 SC, Automatic/Manual/Monitored Start and Automatic Start with Start-up Test, UB 24 V AC/ DC, 90 mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates

MFR: PILZ

MFR #: 774609

Item #: 111337

Available to Order

$1230.00 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 3 N/O, 1 N/C, 1 SC, Automatic/Monitored Start, UB 120 V AC/24 V DC, 45 mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates

PILZ

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 3 N/O, 1 N/C, 1 SC, Automatic/Monitored Start, UB 120 V AC/24 V DC, 45 mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates

MFR: PILZ

MFR #: 774316

Item #: 181435

In Stock - Check Availability

$600.00 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 7 N/O, 1 N/C,1 SC, Automatic/Manual/Monitored Start, Start-up Test, UB = 110-120 V AC/24 V DC, 90mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates, Feedback Loop

PILZ

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 7 N/O, 1 N/C,1 SC, Automatic/Manual/Monitored Start, Start-up Test, UB = 110-120 V AC/24 V DC, 90mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates, Feedback Loop

MFR: PILZ

MFR #: 774085

Item #: 523235

Available to Order

$1056.00 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 3 N/O, 2 N/Ot-d, UB = 24 VDC, 45mm, Screw Terminals Integrated, E-STOP Monitoring, Safety Gates with 2 Delay-on De-Energization Contacts, Release Time 0.5s Fixed

PILZ

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 3 N/O, 2 N/Ot-d, UB = 24 VDC, 45mm, Screw Terminals Integrated, E-STOP Monitoring, Safety Gates with 2 Delay-on De-Energization Contacts, Release Time 0.5s Fixed

MFR: PILZ

MFR #: 774544

Item #: 1394909

Available to Order

$909.00 each

Availability

Location	Available Qty

PNOZsigma Contact Expansion, 4 N/O, 1 N/C, UB 24 VDC, 17.5 mm, Plug-in Screw Terminals, Contact Block for Contact Expansion in Connection with Safety-Related Control Components

PILZ

PNOZsigma Contact Expansion, 4 N/O, 1 N/C, UB 24 VDC, 17.5 mm, Plug-in Screw Terminals, Contact Block for Contact Expansion in Connection with Safety-Related Control Components

MFR: PILZ

MFR #: 750107

Item #: 630828

Available to Order

$334.50 each

Availability

Location	Available Qty

PNOZsigma Contact Expansion, 2 N/O, 1 SC, UB 24 VDC, 12.5mm, Plug-in Screw Terminals, Contact Block for Contact Expansion in Connection with Safety-Related Control Components

PILZ

PNOZsigma Contact Expansion, 2 N/O, 1 SC, UB 24 VDC, 12.5mm, Plug-in Screw Terminals, Contact Block for Contact Expansion in Connection with Safety-Related Control Components

MFR: PILZ

MFR #: 750108

Item #: 1545190

Available to Order

$292.50 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 2 Safety Outputs, 1 Auxiliary Output in SC Technology, Automatic/Monitored Start, UB = 24 VDC, 22.5mm, Plug-in Terminals of Screw Type, Connection Between Several Devices, Monitoring of E-STOP, Safety Gates, Feedback Loop

PILZ

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 2 Safety Outputs, 1 Auxiliary Output in SC Technology, Automatic/Monitored Start, UB = 24 VDC, 22.5mm, Plug-in Terminals of Screw Type, Connection Between Several Devices, Monitoring of E-STOP, Safety Gates, Feedback Loop

MFR: PILZ

MFR #: 774133

Item #: 831934

Available to Order

$814.00 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 2 N/O, 2 N/Ot-d, UB = 24 VDC, 45mm, Screw Terminals Integrated, E-STOP Monitoring, Safety Gates, with 2 Delay-on De-Energization Contacts

PILZ

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 2 N/O, 2 N/Ot-d, UB = 24 VDC, 45mm, Screw Terminals Integrated, E-STOP Monitoring, Safety Gates, with 2 Delay-on De-Energization Contacts

MFR: PILZ

MFR #: 774500

Item #: 418013

Available to Order

$895.50 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 2 Safety Outputs, 1 Auxiliary Output in SC Technology, Delayed Automatic/Monitored Start, UB = 24 VDC, 22.5mm, Plug-in Terminals of Screw Type, Monitoring of E-STOP, Safety Gates, Feedback Loop

PILZ

Safety Relay, 1/2-Channel Wiring with/without Detection of Shorts Across Contacts, 2 Safety Outputs, 1 Auxiliary Output in SC Technology, Delayed Automatic/Monitored Start, UB = 24 VDC, 22.5mm, Plug-in Terminals of Screw Type, Monitoring of E-STOP, Safety Gates, Feedback Loop

MFR: PILZ

MFR #: 774131

Item #: 1596951

Available to Order

$1106.00 each

Availability

Location	Available Qty

Safety Relay, 1/2-Channel Wiring with Detection of Shorts Across Contacts, 7 N/O, 2 N/C, 2 SC, Automatic/Monitored Start, UB = 24 VDC, 90mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates

PILZ

Safety Relay, 1/2-Channel Wiring with Detection of Shorts Across Contacts, 7 N/O, 2 N/C, 2 SC, Automatic/Monitored Start, UB = 24 VDC, 90mm, Screw Terminals Integrated, Monitoring of E-STOP, Safety Gates

MFR: PILZ

MFR #: 774605

Item #: 182632

Available to Order

$1230.00 each

Availability

Location	Available Qty

Configurable Safe Small Controllers PNOZmulti 2, Base Unit, Expandable, 20 Safe Digital Inputs, 4 Safe Semiconductor Outputs

PILZ

Configurable Safe Small Controllers PNOZmulti 2, Base Unit, Expandable, 20 Safe Digital Inputs, 4 Safe Semiconductor Outputs

MFR: PILZ

MFR #: 772100

Item #: 1249753

Available to Order

$1386.00 each

Availability

Location	Available Qty

Contact Expansion, 1/2-Channel Wiring Without Detection of Shorts Across Contacts, 4 N/O, UB 24 VDC, 22.5mm, Plug-in Screw Terminals, Contact Block for Contact Expansion in Connection with Safety-Related Control Components

PILZ

Contact Expansion, 1/2-Channel Wiring Without Detection of Shorts Across Contacts, 4 N/O, UB 24 VDC, 22.5mm, Plug-in Screw Terminals, Contact Block for Contact Expansion in Connection with Safety-Related Control Components

MFR: PILZ

MFR #: 777587

Item #: 1618524

Available to Order

$372.00 each

Availability

Location	Available Qty

50-W ground-check termination assembly with convenient mounting holes and screw terminals.

Littelfuse

SE-TA12A Relay Series Termination Assembly - 12V

MFR: Littelfuse

MFR #: SE-TA12A

UPC: 079458989489

Item #: 482948

Available to Order

$2046.95 each

Availability

Location	Available Qty

Used when replacing an Atkinson Omser II with an SE-130-Series Monitor.

Littelfuse

PMA-8 PMA Series Enc Panel Adaptor Se-134/Atkinson

MFR: Littelfuse

MFR #: PMA-8

UPC: 079458978421

Item #: 1008517

Available to Order

$1775.48 each

Availability

Location	Available Qty

The SE-325 Neutral-Grounding-Resistor Monitor is used on resistance-grounded systems up to 25 kV to monitor the integrity of the neutral-to-ground path and to detect ground faults. It measures current and voltage in a transformer or generator neutral-to-ground connection and continuity of the neutral-grounding resistor (NGR). The SE-325 coordinates these three measurements to detect a loose connection, corrosion, ground fault, or NGR failure, and provides one alarm or trip output contact.

Littelfuse

SE-325 SE 325 Series Neutral-Grounding-Resistor Monitor

MFR: Littelfuse

MFR #: SE-325

UPC: 079458988079

Item #: 1280879

Available to Order

$6309.38 each

Availability

Location	Available Qty

Remote indication and reset for the SE-330, SE-330AU, and SE-330HV. NEMA 4 and NEMA 13 rating. Standard 22-mm mounting.

Littelfuse

RK-332 RK 332 Series Remote Indication And Reset Assembly

MFR: Littelfuse

MFR #: RK-332

UPC: 079458987836

Item #: 1204732

Available to Order

$1842.23 each

Availability

Location	Available Qty

The EFCT series is a sensitive nickel-core current transformer used with Littelfuse relays to detect low levels of earth-leakage current.

Littelfuse

EFCT-1 Relay Series Xfmr Current 100 1 Ef 3.25In Id

MFR: Littelfuse

MFR #: EFCT-1

UPC: 079458977684

Item #: 534791

Available to Order

$2864.50 each

Availability

Location	Available Qty

The SE-330 is an advanced ground-fault and neutral-grounding resistor monitoring relay that is compliant with Rule10-302 of the 2018 Canadian Electrical Code Part I (CE Code). It measures neutral current, neutral-to-ground voltage, and neutral-to-ground resistance. It provides continuous monitoring of the neutral-to-ground path to verify that the neutral-grounding resistor (NGR) is intact and that it has not been bypassed or shorted. An open NGR renders currentsensing ground-fault protection inoperative and could result in a false belief that the system is functioning properly. A shorted NGR results in higher-than-expected ground-fault current. The SE-330 can be used with low- and medium-voltage transformers and generators with low- or high-resistance grounding used in processing, manufacturing, chemical, pulp and paper, petroleum, and water-treatment facilities. For high-voltage applications, use the SE-330HV. For applications that require conformance to Australian standards, use the SE-330AU.

Littelfuse

SE-330-SMA SE 330 Series Se-330 Surface-Mount Adaptor

MFR: Littelfuse

MFR #: SE-330-SMA

UPC: 079458988604

Item #: 1204733

Available to Order

$1321.00 each

Availability

Location	Available Qty

The EFCT series is a sensitive nickel-core current transformer used with Littelfuse relays to detect low levels of earth-leakage current.

Littelfuse

EFCT-26 Relay Series Xfmr Current 100:1 Ef 26Mm Id

MFR: Littelfuse

MFR #: EFCT-26

UPC: 079458977721

Item #: 866232

Available to Order

$1793.60 each

Availability

Location	Available Qty

50-W ground-check termination assembly with convenient mounting holes and wire leads.

Littelfuse

SE-TA6A-WL Relay Series Gf/Gc Term Assy 5.6V 50W Tc Wl

MFR: Littelfuse

MFR #: SE-TA6A-WL

UPC: 079458989557

Item #: 656337

Available to Order

$2349.20 each

Availability

Location	Available Qty

Used On Systems Up To 15 kV.

Littelfuse

ER-15KV ER-15KV Series Res Sensing 100K 15000V L-L

MFR: Littelfuse

MFR #: ER-15KV

UPC: 079458977905

Item #: 501382

Available to Order

$10080.30 each

Availability

Location	Available Qty

MOTOR OVERLOAD PROTECTION 8000

Littelfuse

MP8000 MP8000 Series Motor Overload Protection 8000

MFR: Littelfuse

MFR #: MP8000

UPC: 079458046113

Item #: 719830

Available to Order

$2952.45 each

Availability

Location	Available Qty

No Image Available

Littelfuse

ECSL41AD SSAC Current Sensor

MFR: Littelfuse

MFR #: ECSL41AD

UPC: 079458992724

Item #: 1238971

Available to Order

$627.83 each

Availability

Location	Available Qty

No Image Available

Littelfuse

SE-330-07-00 SE 330 Series Ngr Mon.,Univ.,Sc Fiber & Rj45,61850

MFR: Littelfuse

MFR #: SE-330-07-00

UPC: 079458812848

Item #: 1528349

In Stock - Check Availability

$25296.25 each

Availability

Location	Available Qty

No Image Available

Littelfuse

SE-330-04-00 SE 330 Series Ngr Mon.,Univ., Ethernet Sc Fiber & Rj45

MFR: Littelfuse

MFR #: SE-330-04-00

UPC: 079458812473

Item #: 1526332

Available to Order

$23538.35 each

Availability

Location	Available Qty

No Image Available

Littelfuse

601 Relay Series 3-Phase Voltage Monitor W/ Dis

MFR: Littelfuse

MFR #: 601

UPC: 079458989632

Item #: 1543863

Available to Order

$1635.70 each

Availability

Location	Available Qty

No Image Available

Littelfuse

NDS-8 Relay Series Pin 8-Pin Socket

MFR: Littelfuse

MFR #: NDS-8

UPC: 079458997132

Item #: 746926

Available to Order

$30.98 each

Availability

Location	Available Qty

No Image Available

Littelfuse

460-B Symcom 3-Phase Volt Mon/ 190-480V/Ad

MFR: Littelfuse

MFR #: 460-B

UPC: 079458990591

Item #: 1359341

Available to Order

$493.30 each

Availability

Location	Available Qty

No Image Available

Littelfuse

OT08PC SSAC Socket, 8 Pin Octal

MFR: Littelfuse

MFR #: OT08PC

UPC: 079458997422

Item #: 162871

Available to Order

$49.25 each

Availability

Location	Available Qty

No Image Available

Littelfuse

KRDM215M SSAC 2X2 D.O.M. W/Relay

MFR: Littelfuse

MFR #: KRDM215M

UPC: 079458994773

Item #: 1489833

Available to Order

$278.45 each

Availability

Location	Available Qty

No Image Available

Littelfuse

460-100-SP Symcom 1-Phase Voltage Monitor/ 115V/

MFR: Littelfuse

MFR #: 460-100-SP

UPC: 079458990508

Item #: 878271

Available to Order

$503.23 each

Availability

Location	Available Qty

No Image Available

Littelfuse

102A3 Symcom 3-Phase Voltage Monitor/ 190-4

MFR: Littelfuse

MFR #: 102A3

UPC: 079458990058

Item #: 24880

Available to Order

$773.13 each

Availability

Location	Available Qty

No Image Available

Littelfuse

TSB422 SSAC Delay On Break Timer

MFR: Littelfuse

MFR #: TSB422

UPC: 079458020434

Item #: 887406

Available to Order

$254.13 each

Availability

Location	Available Qty

No Image Available

Littelfuse

FSU1004 SSAC Universal Adjustable Flasher

MFR: Littelfuse

MFR #: FSU1004

UPC: 079458993622

Item #: 1260645

Available to Order

$406.55 each

Availability

Location	Available Qty

No Image Available

Littelfuse

MSM42W6 SSAC Solid State Timer (D.O.M.)

MFR: Littelfuse

MFR #: MSM42W6

UPC: 079458997095

Item #: 207080

Available to Order

$194.35 each

Availability

Location	Available Qty